Secure E-Signatures with Tamper-Evident Audit Trails
Sign documents online with legally-binding electronic signatures. Every action is cryptographically verified for complete transparency.
Quick Verify
$ opensign verify --token abcd1234
Bank-Grade Security
SHA-256 hash chains ensure document integrity. Every signature is cryptographically verified and tamper-evident.
Complete Audit Trail
Track every view, signature, and action with timestamps and IP addresses. Export comprehensive certificates.
Legally Binding
OTP-verified signer identity, explicit consent capture, and timestamped signatures meet legal requirements.
How It Works
1
Upload
Upload your PDF document
2
Prepare
Add signers and place fields
3
Send
Send invites via email
4
Sign
Signers verify and sign